Electromagnetic low-energy constants in ChPT

Abstract

We investigate three-flavour chiral perturbation theory including virtual photons in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the external fields are those of two-flavour chiral perturbation theory. In particular we work out the strange quark mass dependence of the electromagnetic two-flavour low-energy constants C and k_i. We expect that these relations will be useful for a more precise determination of the electromagnetic low-energy constants.

18 pages, 4 Tables, 2 figures

References in corpus (5)

• Chiral extrapolations of baryon masses for unquenched three-flavor lattice simulations
• Determination of light quark masses from the electromagnetic splitting of pseudoscalar meson masses computed with two flavors of domain wall fermions
• Integrating out strange quarks in ChPT
• Quark Mass dependence at Two Loops for Meson Properties
• Pion mass difference from vacuum polarization